Date: Sun, 2 Apr 2006 12:09:31 -0700 From: George Hartzell <hartzell@alerce.com> To: "Daniel O'Connor" <doconnor@gsoft.com.au> Cc: Matthias Andree <matthias.andree@gmx.de>, freebsd-stable@freebsd.org Subject: Re: SATA RAID: Adaptec 1420SA, Promise TX4300? Message-ID: <17456.8555.346837.713452@satchel.alerce.com> In-Reply-To: <200604022255.03855.doconnor@gsoft.com.au> References: <20060401110818.U54953@localhost> <200604021233.20917.doconnor@gsoft.com.au> <m34q1cxuek.fsf@merlin.emma.line.org> <200604022255.03855.doconnor@gsoft.com.au>
next in thread | previous in thread | raw e-mail | index | archive | help
Daniel O'Connor writes: > On Sunday 02 April 2006 17:48, Matthias Andree wrote: > > > You can't boot off a system with a dead primary disk with software RAID1. > > > (well you MIGHT but.. in any case RAID1 cards are quite cheap) > > > > It's a matter of the BIOS: > > will it complain, or will it proceed to the next SATA disk? > > Yes indeed. > It also depends on the failure mode of the disk. > > Personally I think the price is worth paying :) > (Although for a home server you can get your hands on easily then software > RAID should not be a problem) One of the advantages that purely software raid (e.g. gmirror) has over "hardware" raid (faux or genuine) is that in an emergency I can take one or both of my gmirror'ed disks and put them in just about any system that I can come up with and they'll work. With raid systems that use proprietary metadata I'd need to find a similar controller to hook them up to. I think that this is one of those Darned Engineering Tradeoffs, but I'd rather have the flexibility in assembling hardware than having the raid be able to boot w/out intervention w/ a dead disk. g.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?17456.8555.346837.713452>